Burner-tip.



Patented October 13, 1903.

AIlENT rricn.

JOHN DOORENBOS, OF ALLEGHENY, PENNSYLVANIA.

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SPECIFICATION forming part of Letters Patent No. 741,316, dated October13, 1903.

Application filed December 29,1902. Serial No. 136,966. (No model.)

To (tZZ whom it may concern: 4

Beit known that I, JOHN Doonnnsosa citizen of the United States,residing at Allegheny, in the county of Allegheny and State ofPennsylvania, have invented new and useful Improvements in Burner-Tips,of which the following is a specification.

My invention relates particularly to Bunsen-burner caps, or gauze caps,as they are commonly known by reason of the common use of gauze in theirconstruction.

My primary object is to provide an improved cap for Bunsen burners,particular attention being paid to securing a more simple and durableconstruction than has been known heretofore and at the same timeproviding against the possibility of explosions of any force whatever,which mightinjure the delicate incandescent mantle commonly employed.

In the accompanying drawings my invention is shown applied to theplural-burner-orifice Bunsen burner of the kind described in Patent No.686,035, granted to John Doorenbos and Garett G. Doorenbos, foranimproved incandescent gas-lamp, November 5, 1901. It will be understood,however, that the improved burner-cap may be applied advantageously toany burner of the Bunsen type.

In the drawings Figure 1 represents a plan view of the top of aburner-body of the kind shown in said patent; ,Fig. 2, a section takenas indicated at line 2 of Fig. 1, and Fig. 8 an enlarged sectional viewof the burner-tip employed.

In the construction shown, A represents the removable top of a Bunsenburner of the plural-burner-orifice type shown in said patent; B,burner-caps applied to said top, and (J mantle-standards supported bysaid caps.

Each burner-cap comprises, preferably, an integrally-formed lava tip I)of circular form and provided on its fiat under surface with an annularchannel 17, with which communicate outwardly-inclined perforations 11opening at a cone-frustum surface b surrounding a central hollow boss orstandard-socket 12 a circular piece of wire-gauze b upon which thebottom surface of the tip rests, and a circular clip or ferrule I),having a short sleeve or shank 19 an annular flange or seat Z2 and anupwardly-extending sleeve b ,which receives the tip I) and has its upperportion spun over the outer margin of the surface 6 to form aretaining-flange b Each burnercap has the shank b fitted into the upperend of a short tube 0, the lower end of which fits Within a socket c 011the burner-body top A. Concentric with the sockets c are perforations ororifices c in the top, through which the mixture of gas and air passesfrom a common mixer chamber, as explained in the above-mentioned patent.

It will be understood readily that the improved burner-cap may beapplied to any Bunsen burner, regardless of the number ofburner-orifices. It will be observed that the annular groove 1) affordsbut small space above the gauze b below which the flame cannot pass, sothat no opportunity for an ex plosion of any magnitude whatever isafiorded. The socket for the mantle-standard is formed integrally withthe top, and the whole construction is substantial and durable.

Changes in details of construction within the spirit of my invention maybe made. Hence no undue limitation should be understood from theforegoing detailed description, which has been given for clearness ofunderstanding only.

What I regard as new, and desire to secure by Letters Patent, is-

1. An improved burner-cap, comprising a perforated tip, a gauze, and aclip having a downwardly-extending hollow shank and a seat in which saidgauze and tip are secured, for the purpose set forth.

2. An improved burner-cap, comprising a tip having a flat under sideprovided with an annular recess and having perforations communicatingwith said recess, a gauze upon which the under side of said tip rests,and an annular clip securing said parts together, for the purpose setforth.

3. An improved burner-cap, comprising an integrally-formed perforatedtip and central mantle standard socket, said tip being equipped atitsunderside withahollow shank, in combination with a short tube receivingsaid shank, and a burner-body top having a socket receiving said tube,for the purpose set forth.

JOHN DOORENBDS. In presence of J. H. MARTIN, M. G. SoovELL,

